The Kansas City Star reported that Allen worked with the first unit at center for a few plays during Wednesday's organized team activities (OTAs). Allen worked with the first unit at tackle earlier this offseason when Branden Albert was away.

Allen, a second-round pick in 2012, started the final 13 games last season at left guard. He is expected to compete with free-agent addition Geoff Schwartz there this season. Allen has a bright future, and the more versatility he can show, the more valuable he can be to the team.

In other Chiefs OTA notes:

Undrafted free-agent quarterback Tyler Bray continued to get most of the third-string snaps over third-year quarterback Ricky Stanzi. Bray was expected to be a mid-to-late-round pick in April's draft. He has big ability but needs to refine his game. Unless he completely falls apart in training camp, it would be a surprise if Kansas City keeps Stanzi over Bray.

Pistol offense consultant Chris Ault is working with the team this week. He will be with the Chiefs periodically to help both the offense and the defense adjust to the scheme.